Stop-motion for printing-presses.



Patented July l8, I899. T. M. NORTH.

STIJP MUTION FOR PRINTING PRESSES.

(Application filed Jan. 5, 1897.)

5 Shets-Sheet I.

{No Model.

rm: "cams PEYERS w. Pncnoumq. WASHINGTON. n c,

No. 629,997.; Patented July I8, 1999-. I T. N. NORTH. v

STOP MOTION FOR PRINTING PBESSES.

{Application filed Jam. 5, 1897.) (In Nodal.) 5 sneet9sh99t v2.

ml: xoflms 9mm ca. PHOTO-LUNG wnsumu-rm. D. c.

N0; 629,087. Patented July l8, I899.

' T-. N. NORTH.

STOP MOTION FOR PRINTING PHESSES.

(Application filed Ian. 6, 1897.1

5 Sheets--Sheet 3.

nflow.)

No. 629,087. Patented Iuly 18, I899. T. I. NORTH. STOP MOTION FORPRINTING PRESSES.

(Application' filed J nn. 5. 1897.!

5 Sheets-Sheet 4.

(No udder.)

Tn: nouns rrruu pajmm WINGYON. m c.

N0. 629,087. Patanted July I3, I899.

T. M. HURT. STOP MOTION FOR PRINTING PBESSES,

(Application filed. Jun. 5, 1897.)

JZZUGTLZZU tions. for Printing-Presses, fully described ably, moves at aconstant speed. The inven-' the sheet-receiving cylinder is coupled doesimproved devices by which a movable mem- 1 barren STATES:

PATENT other.

THOMAS M. NORTH, on NEW YORK, N. Y., Assienon T0 ROBERT HOE, THEO- DoEEn. MEAD, ND CHARLES w. CARPENTER, or sAME PLACE.

S-i'OP -MOTYON FOR. PRlN T lNG-PRESSES,

SPECIFICATION formingpart of Letters Batent No. 629,087, dated 'd'uly18, 1899.

' 7 Application and January 5, i397.

To (tZZ whom it may concern.-

Be it known that I, THOMAS M. NORTH, a subject of the Queen of GreatBritain, resid-' ingat New York, Brooklyn,) county of Kings, and Stateof New York, have invented certain new and useful Improvements in.Stop-Moand represented in the following specification and theaccompanying drawings, forming a' part of the same.

This invention relates generally to printing-machines employing'asheet-receiving cylinder which is stopped in order that the sheet may befed thereto,-and after the sheet has been fed is started and carries thesheet onward in order that it may be subjected to the-printing"operations.

The invention is more particularly concerned with that class ofprinting-machines in which the receiving-cylinder is coupledto anduncoupled from a memberwhich, prefer tion might, however, be usedin'machines other than printing-machines and in printing-machineswherein the member to which not move at a constant speed.

The invention has for its object to provide her, such as thesheet-receivin g cylinder, may be coupled to and uncoupled from amoving' n1embersuch, for instance, as a constantlyrotating platecarryingcylinder-the engagement being effected in such a manner as to graduallystart the sheet-receiving cylinder and to cause it to move with aconstantlyaccelerat-ing speed'until its surface movement becomes uniformwith the member to which it is connected,to maintainthis uniformmovement during a desired period of time, and then to gradually retardthe movement of the movable member, at the same time uncoupling it fromits cooperating moving member until it is brought to a full stop, atwhich time in case the movable member is a sheetreceiving cylinderthe'sheet may be fed' thereto. I

The machine which has been selected to illustrate the invention is aprinting-machine of the rotary stop-cylinder type, and thesheetreceiving cylinder acts also as the imwith this invention.

Serial No. 618,024. (No model.)

pression member of a printing-couple, the

cylinder to which itis coupled and from which it is uncoupled actingalso as the printing or plate-carrying member of the couple. As be-' 5 5fore indicated, however, it is to be understood that the invention isnot to be limited in its use to the particularkind of printing-machinedescribed in the following specification and illustrated in theaccompanying drawings, nor is its use to be restricted to printingmachinery, as it is useful not only in other styles ofprinting-machines, but also in many other relations.

The invention consists in certain constructions, parts, improvements,and combinations, as will be hereinafter fully described in thefollowing specification and pointed out .in the claims hereuntoappended.

In the accompanying drawings, which constitute a part of thisspecification, and in which like characters of reference indicate thesame parts, Figure 1 is a side elevation of a rotary stop-cylinderprinting-press equipped Fig. 2 is a plan view of 7 5 the same. Figs. 3to 8, inclusive, are dia grammatic end elevations of the impression andform cylinders, showing their parts in various relations during theperformance of said operations; and Fig. 9 is a diagrammatic 8osuperimposition of the two coupling-levers.

In order to readily understand this i'nven-,-

' tion, the printing-press illustrated as embodying it will first begenerally explained. It consists of a form, plate, or type cylinder Aand a sheet-receiving or impression cylinder B, which cylinders are somounted in the side frames as to suitably revolve and coact in producingthe impression. In this instance the form, plate,-or type cylinder A istwice the diameter of the impression-cylinder B; but this may vary, asiswell understood.

.The' cylinder A is provided at oneend with a gear 12, which meshes witha gear 11, mountedupon a cam-shaft 3-, and which lat- 5 ter gear 11meshes with a pinion ,10 on the driving-shaft 2,-.and which shaft isprovided with driving-pulleys'48 and 49, as is usual,

motion thus beingjimparted from the drivingshaftthrongh pinion 10 andgears 11 12 to too the form or plate cylinder A.

The cylinder B is provided at one end with a segment 30, and the form orplate cylinder A is provided at the same end with a segment 31, whichsegments 30 and 31 are caused at proper times to intermesh, and thusenable the cylinder A to drive cylinder B and the two to moveconcertedly during a portion of a rotation of the latter, or while theprinting operation is effected. Atits opposite end the cylinder B may,if desired, and as is shown, be provided with a similar segment 32,whichwill in like manner coact with the gear 12 on cylinder A.

The shaft of the impression-cylinder B is provided with a gear 40, fastupon it, which meshes with and drives a gear 41, fast on the shaft ofthe delivery-cylinder O, by which the latter moves concertedly with theimpressioncylinder for the delivery of the sheets, and these sheets arein the instance shown delivered to tapes 42, whereby they are carriedover fly-fingers 43, by which they are laid upon a piling-table in theordinary way.

The impression-cylinder B is provided with sheet-grippers 33, that areoperated to receive the sheet fed to them from the table 50 and to carrythe same around with said cylinder and into contact with the form,plate, or type on the cylinder A and to release the printed sheet to thedelivery-cylinder C, as is common, the latter of course havingreceivinggrippers, or to equivalent transferring device or a guidingdevice for accomplishing the smooth and effective passage of the sheetsfrom the cylinder 13 to the final-delivery device.

The plate or form cylinder A in the machine which has been selected toillustrate the invention is double the size of the impression-cylinder Band is provided with a plate or form carrying portion equal incircumferential extent to that of the impressionsurface of the cylinderB. It also has an inkdistributing surface I, is equipped with suitableink-supplying devices K, and may have associated with it plate-dampin gappliances in case the machine is designed to print fromplanographicsurfaces. These dampingappliances are or maybe of anysuitable construction, and it is not'deemed necessary to show them. Themachine is further provided with form-rollers L, which are supplied withink from the distributing-surface I and which act to ink the form in theusual manner.

In order that the im pression-cylin der B may be brought into and remainin a state of rest, at which time a sheet is fed to it, and then bestarted in its revolution and have its movement accelerated to that ofthe form or plate cylinder A, have its segment 30 moved into gear withthe segment 31 of the said cylinder A, so as to be driven thereby atuniform surface speed therewith, and after having thus been rotatedduring the making of the impression have its movement gradually sloweddown when the segment 31 runs out of gear with the segment 30 and thenbrought to a state of rest in its normal position for the reception ofanother sheet and be uncoupled from said cylinder A without diminishingthe normal movement of the latter cylinder, the cylinder A is providedwith two coupling-levers 20 21, which levers are respectively pivoted tothe head of cylinder A at its nongear end by means of projecting studs 45, suitably secured thereto. The inner 0r actuating arm of each of theselevers 2O 21 is provided with an antifriction-roll, as 6 7, which runsin the path-cam 60, which is bolted to the side frame in a stationaryposition and suitably curved to produce the requisite movements of saidlevers. The forward ends of these levers 2O 21 are slotted, so as toproperly enter over, engage, and withdraw from studs or rolls 8 9, thatare carried by and project beyond one end of the impression-cylinder Bat suitable distances apart between the ends of the segment 30.

The function of the lever 20 is to engage with the roll 8 to start theimpression-cylinder B from its state of restand move it to such anextent that its segment 30 shall be in position to gear with the segment31, its corresponding segment 32, if that be used, being simultaneouslybrought into position to mesh with the gear 12. The function of thelever 21 is to engage the roll 9 as the segment 30 is running out ofgear with the segment 31 while both cylinders are moving at the samespeed and cause the impression-cylinder B to complete its necessaryrotary movement, but at a diminishing speed, and leave it in its properposition of rest for the reception of the sheet vto be printed. Theexact operation of these mechanisms will be more fullyhereinafterdescribed; but, first, since it is desirable,though not essential, thatthe stopping of the rotation of the cylinder 13 shall be aided by amechanism for overcoming its momentum and with a locking device when thecylinder is to be stopped the means for accomplishing these objectsandadopted herein will first be explained.

The shaft of the impression-cylinder B is provided, outside of theframework, with a brake-wheel (31, around which a friction-band 62 isstretched, said band having its ends attached at different points to theoutermost arm of a bell-crank 63, that is pivoted at (if to the sideframe, said bell-crank having its inner arm pivoted to a rod 65, that isguided over the camshaft 3 and has a roll that is pressed upon by thecam 66 on the cam-shaft 3, which cam is so shaped as to tighten andloosen the friction-band 62 at suitable intervals.

In order that the cylinder 13 may be locked in a position of restsuitable to hold its sheetreceiving grippers 33 into position to receivethe sheet andits roll 8 in position to be engaged by the lever 20, saidbrake-wheel 61 is provided with a stud 1, projecting from its innerface, with which codperates a stop-lever '70, that is pivoted to theside frame at 71,

lIO

and has its upper end forked to engage with said stud'l, and its :lowerarm 72 is provided with a stud that runs in the groove of a cam '73,fast on the cam-shaft 3.

If the brake mechanism and the stop-lever 70, either or both, are used,it will be understood that when the cylinder Bis to be started intorotation the brake mechanism will be released and the stop-lever willbe. disconnected from said cylinder, so that it may be set into rotationby the action of the lever 20,

carried by the continuously-moving cylinder A, be geared thereto, andafter making nearly arevolution be slowly retarded and broughtto a stateof rest by the lever 21, the slowing- -down operation being aided by thebrake mechanism and the stopping action being renderedpositive bysaidstop-lever 70. It will be understood that'when the brake mechanism-andstop-lever 70are present they are thrown out of action slightly beforeor simultaneously with the commencement of theop- I eration of rotatingthe cylinder B, the per- 3 to 8, inclusive.

the same.

formance of'which operation will be understood by the followingdescription thereof, taken in connection with the diagrams Figs.

In Fig. 3 the parts are shown in the positions which they have when theconstantlyrotating cylinder A is bringing its couplinglever20 intoengagement with the roll 8, carried by the sheet-receiving cylinder 13,to start ously in the direction ofits arrow and the cam 60 is properlyshaped therefor, said cam will cause the lever 20, pivoted to thecylinder A, to so move onwardlyandoutwardly that its outer bifurcated orslotted end will pass over the roll 8," and thus securely couple the twocylinders together, so that they'will The outer end i of thiscoupling-lever ZOfirst meets the roll- '8, as is shown in full lines inFig. 3, when thereafter revolve in unison.

the cylinder 13 is stationary,aud in moving from this positionwith thecylinder Athe distance shown by the dotted lines in said figure thislever is not only passed over that roller, but has in so doing startedthe cylinder B with anaccelerating motion by the engagement of the rearor driving face of its slotted end with theroll 6. 3 In moving with saidcylinder A to the extent shown'by fulllines in Fig. 4 the lever201'emains fully coupled with the-r0118. It thus smoothly engages theroll 8, and thus not only starts the impression-cylinder B intorotationfrom its stateof rest, but moves it with a gradually-increasingspeeduntilits movement is uniform in speed with that of the cyliuderA, atwhich'time the segment 30 of cylinder B will be engaged with the segment31 of the cylinder A,-\vhi'ch latter thereupon drives the cylinder B,atwhich'time the coupling-lever 20 will have been so moved inwardly by theas seen in full lines, Fig. 4, thus admitting of shape of the cam 60asto withdraw said coupling-lever'from engagementwith the r0118,

As thecylinder A moves continueeaosv v a.

cylinder B being wholly driven by the gearing. When this gearing of thetwo segments is efiected and constitutesthe means for rotating cyiinderB from cylinder A, the lever 20 has by the shape of the cam 60 been sofar withdrawn from its engagement with the roll 8 as to enable the twoto pass out of engag ment during the continued rotation of thecylinders. Lever 20 thereafter takes the position shown in Fig. 6, readyto repeat its 'operation just described. The cylinder B then makesthemajor part of its rotation,

v driven by the segments, to perform the'print-.

ing operation, as is seen in Fig. 5', and when during this rotation thesegments are about to run out of gear, as is seen in Fig. 6, the

'cou pling-lever 21 is brought into engagement with the roll 9 in likemanner as was lever 20 in connection ,with roll 8, thus causing'thecylinder B when it ceases to be driven by the segments to'be farthermoved from its posithe cylinder B is locked in its normal orsheetreceiving position, the arresting of said-cylinder having beenaided, if desired, by the brake mechanism. The lever 21 is thereafter bythe further rotation of thecylinderAwithdrawn from the roll 9, as isseenin Fig. 7, full lines, in like manner as was the. lever 20. The cylinderB is thus stopped in its normal or sheet-receiving position, as in Fig.8, while thecylinder'A, continuously rotating, completes its rotation,the lever 2l-is withdrawn to its inward position, as in Fig. 4, and themechanisms are again brought into positio to repeat the operationsdescribed. The relative shapes of the cam 60, lever 20,

and. the slot in its end are such that while the slotted end of thelever 20 is just approaching and meets the stud 8 the iine of motion ofits slotted end is parallel with the sides or bearing-surfaces of itsslot; but as the'canislot GOacting upon the stud 6 of this lever rocksthe same it causes the slottedend'of said lever to constantly deviateangularly from this parallelism, which angular movement, in conjunctionwith its forward movement, constantly imparts increasing'speed to theroller 8 and through it to the cylinder B until it leaves the roller 8,when the. angle at movements of the lever will impart a uniform surfacespeed to cylinder 13 with cylinder A,

at which time the segments 30 and Slwill be engaged to drive't'hiscylinder B, whereupon said leverwill have ceased its driving action.

The segments 30 31 then drive'the cylinder A 1' through nearly onerotation and bring the le- I25 which it is then related to the roller 8is such v that the resultant of the. outward and forward ver 21 intoposition to couple with roll 9 to enable the cylinder B to be broughtgradually to a state of rest. This lever 21 operates in a manner theopposite to that of lever 20- that is, engages the roll 9 of cylinder Bat its high or normal speed and constantly diminishes the same untilsaid cylinder is arrested.- The operation will be best understood fromFig. 9, where the levers 20 and 21 are illusa and leave it at itsgreatest operating-angle,

Fig. 4, which is when both cylinders are moving at the same speed. Butunder the same operating conditions-that is, when the stud 7 of lever 21is in the same position on the cam as the stud 6 of lever 20 was(compare Figs. 3 and 6 or see Fig. 9)-it will be perceived that thelever 21 will engage the stud 9 while said lever 21 is at its greatestoperating-angle, in which it will impart a motion equal to the surfacespeed of the cylinders, and by comparing Figs. 4 and 7 it will beapparent that this lever 21 will leave said roll 9 when this lever is atits least operating-angle, Fig. 7, or when the parallel bearing sides oractuating-surfaces of this lever are parallel with its movement. It willbe noticed that the operating-surfaces of the lever 20 and the lever 21are inclinedto the path of movement of the cylinder B, by which they arecarried.

The difference between the dotted and full lines of the coupling-leversin Figs. 3 and 4 and 6 and 7 shows how the same angular distance oftheir travel imparts dilferent motions to their respective studs, whichare indicated in dotted and full lines.

There might be provided two cams at opposite ends of the cylinder A, oneoperating the lever 20 and the other operating the lever 21; but it isdesirable and preferable that only one cam be employed, and also thatthis cam shall be a stationary one, as is' herein shown. It is possibleto so shape a single cam thatit may move and properly actuate the levers20 21.

While in the arrangement shown the cylinder B is shown and described asperforming the function of an impression-cylinder, it is obvious that itmay solely act as a feedingcylinder, to which sheets may be fed While itis stationary, and thus insure perfect register and then operate tocarry the sheet inward and transfer it to the cylinder A, and that thelatter may receive and carry onward said sheet and act as animpression-cylinder and impress said sheet upon a form carried by acoactiug cylinder, or it may be in connec tion with a reciprocating bedcoactin g with the cylinder A.

It is obvious that in some structures embodying this invention thecylinder B may perform the function only of a transfer-cylinder, thuscarrying the sheet to another mechanism or mechanisms which are tooperate upon it.

What is claimed is-- 1. The combination with a sheet-receiving cylinderand two studs or rolls carried thereby, of a larger cylinder providedwith two pivoted coupling-levers adapted respectively to engage saidstuds or rolls, a cam acting to vibrate said levers, and means forcontinuously rotating said larger cylinder, whereby said sheet-receiving cylinderis engaged,while stationary, by the larger cylinder, causedthereby to rotate, is disconnected therefrom and again left stationary,substantially as described.

2. The combination with a sheet-receiving cylinder provided with asegment and two studs or rolls between the terminals of said segment, ofa larger cylinder provided with a driving-segment, two pivotedcoupling-levers adapted respectively to engage said studs or rolls, acam acting to vibrate'said levers and means for constantly rotating saidlarger cyl-' pivoted coupling-levers adapted respectively to engage saidstuds or rolls, a cam acting to vibrate said levers, means forcontinuously rotating said larger cylinder, whereby said sheet-receiving cylinder is engaged,while stationary, by the larger cylinder, causedthereby to rotate, is disconnected therefrom, and a stop-lever wherebysaid receiving-cylinder is locked stationary, substantially asdescribed.

4. The combination with a sheet-receiving cylinder and two studs orrolls carried thereby, of a larger cylinder provided with two pivotedcoupling-levers adapted respectively to engage said studs or rolls, acam acting to vibrate said levers, means for continuously rotating saidlarger cylinder, whereby said sheet-receiving cylinder is engaged,whilestationary, by the larger cylinder, caused thereby to rotate, isdisconnected therefrom, retarded and again left stationary, and a brakemechanism whereby the stopping of said receiving-cylinder is aided,substantially as described.

5. The combination with a sheet-receiving cylinder provided with asegment and two studs or rolls between the terminals of said segment, ofa larger cylinder provided with a driving-segment, two pivotedcoupling-levers adapted respectively to engage said studs or rolls, acam acting to vibrate said levers, means for constantly rotating saidlarger cylsegment, of a larger cylinder provided with a inder, and astop-lever for locking the receiving-cylinder stationary, substantiallyas de-v scribed. I

6. The combination with a sheet-receiving cylinder provided with asegment and two studs or rolls between the terminals of said adaptedrespectively to engage said studs or rolls, a cam acting to 'vibratesaid levers,

means for constantly rotating said larger cylinder, a brake mechanismaiding in arresting said receiving-cylinder, and, a stop-lever forlocking the same described. I v

8. The combination with a sheet-receiving cylinder provided with asegment on each end stationary, substantially as p and two studs orrolls between the terminals of one segment, of a larger cylinderprovided with a driving-segment on one end and a wheel on the other, twopivoted coupling-levers adapted respectively to engage said studs orrolls, a cam acting to vibrate said levers, and means for constantlyrotating said larger cylinder, substantially as described.

9. The combination with a sheet-receiving cylinder and two studs orrolls carried, thereby, of a larger cylinder provided with two pivotedcam-operated coupling-levers adapted to successively coact with saidstuds or rolls, and means for -continuously rotating said largercylinder, whereby the sheet-receiving cylinder is .engaged whilestationary and started into rotation, and is engaged while running atspeed and has its rotation suspended to bring it to a state of rest,substantially as described.

10. The combination with a sheet-receiving cylinder having a segment andtwo studs or rolls carried thereby, of a larger cylinder provided with adriving-segment and two pivotedcam-operating coupling-levers adapted tosuccessively engage said studs or rolls, and means for continuouslyrotating said larger cylinder whereby the sheet receiving cylinder isengaged while stationaryand started into rotation whichis continued asthe segments intermesh, and said rotation is suspended as the segmentsrun out of mesh, to bring the receiving-cylinder to a state of rest,substantially as described. I

11. The combination of two members, means for intermittently driving themembers in unison and means forvarying the speed of one of the memberswith relation to the other,

said means consisting of engaging surfaces having paths of. movementcorresponding to those of the members and one of said surfaces beinginclined to its path of movement, and means for giving one of thesurfaces a movement independent of its driven movement, substantially asdescribed.

- 1:2. The combination with two members,

means for intermittently driving the members in unisommeans for varyingthe speed of one member with relation to the other, said meansconsisting of engaging surfaces having paths of. movementcorrespondingto those of the members, one of the surfaces being inclined to its pathof movement, and means for varying the inclination of said surface,substantially as described,

18, The combination with two rotating members, of a pair of rotatingengaging devices intermediate the two members, the engaging snrface ofone of the devices of the pair being inclined to its path of movement,

and means forgiving one of the surfaces a movement independent of itsrotating movement, substantially as described.

14. The combination with a pair of rotating members, of two pairs ofrotating engaging devices,intermediate the two members, theengaging-surface of one of thedevi'ces of each pair being inclined toits path of movement and means for varying the inclination of saidsurfaces, substantially as described.

15. The combination with a pair of rotating members, of two pairs ofrotating engaging devices intermediate the two members,the engagingsurface of one of the devices of each a pair being inclined to its pathof movement,

and means for giving one device of each pair a movement independent ofits rotating movement, substantially as described.

. 16. The combination with a pair of rotating members, of engagingdevices having a path of movement corresponding to that of the membersand intermittently operating to al ternately gradually increase andgradually reduce the speed of one member with respect to the speed ofthe other member, and means for giving one of said-devices a movementindependent of its rotating movement,substantially as described.

17. The combination with a pair of rotating members, of two pairs ofrotating devices intermediate the me mbers, means for giving one of thedevices of each of. the pairs a movement independent of its rotatingmovement by which it is caused to be engaged with and disengaged fromits cooperating device, one pair of said devices operating toalternately gradually increase and the other pair to gradually reducethe speedof one member with respectto thespeed of the other member,substantially as descri bed.

18. In a printing-press the combination with a sheet-receiving cylinder,of a cylinder cooperating therewith, means for intermittently drivingthe cylinders in unison and means forvarying the speed ot' thesheet-receiving cylinder with relation to the other cylinder, said meansconsisting of engaging surfaces'carried by the two cylinders, one ofsaid surfaces being inclined to its path of movement, substantially asdescribed.

19. In a printing-press, the combination with a sheet-receivingcylinder, of a cylinder cooperating therewith, means for intermittentlydriving the cylinders in unison, means forvarying the speed of thesheet-receiving cylinder with relation to the other cylinder, said meansconsisting of engaging surfaces having a movement corresponding to thatof the cylinders, andone of said surfaces being inclined to its path ofmovement, and means for giving one of said surfaces a movementindependent of its rotating movement Whereby it is carried into and outof engagement with its cooperating surface, substantially as described.

20. In a printing-press, the combination with a sheet-receivingcylinder, of a cylinder cooperating therewith, means for intermittentlydriving the cylinders in unison, means for varying the speed of thesheet-receiving cylinder with relation to the other cylinder, said meansconsisting of engaging surfaces having a movement corresponding to thatof the cylinders, and one of said surfaces being inclined to its path ofmovement, and means for giving said inclined surface a movementindependent of its rotating movement whereby it is carried into and outof engagement with is cooperating surface, substantially as described.

21. In a printing-press the combination with a sheet-receiving cylinder,of a cylinder cooperating therewith, means for intermittently drivingthe cylinders in unison, means for varying the speed of thesheet-receiving cylinder with relation to the other cylinder, said meansconsisting of engaging surfaces having a movement corresponding to thatof the cylinders, one of said surfaces being inclined to its path ofmovement, and means for varying the inclination of said surface,substantially as described.

22. The combination with a sheet-receiving cylinder, of a secondcylinder cooperating therewith, rotating engaging devices intermediatethe two cylinders, the engaging surface of one of the devices beinginclined to its path of movement, and means for varying the inclinationof-said surface, substantially as described.

23. The combination with a sheet-receiving cylinder, of a cylindercooperating therewith, a pair of rotating engaging devices intermediatethe two cylinders, the engaging surface of one member of the pair beinginclined to its path of movement, and means for giving one of themembers a movement independent of its rotating movement, substantiallyas described.

24. The combination with a sheet-receivin g cylinder, of a cylindercooperating therewith, two pairs of rotating engaging surfacesintermediate the two members, the engaging surface of one member of eachpair being inclined to its path of movement, and means for giving onemember of each pair a movement independent of its rotating movement,substantially as described.

25. In a printing-press, the combination ing-couple, said cylinderhaving sheet-receiving means, of a printing member cooperatingtherewith, means for .varying the movement of the impression-cylinderwith relation to the plate-carrying means, said means consisting ofengaging surfaces moving with the members of the printing-couple, one ofsaid surfaces being inclined to its path of movement, and means forvarying the inclination of said member, substantially as described.

27. In a printing-press, the combination with the impression-cylinder ofthe printing- .couple, said cylinder having sheet-receiving means, of aprinting member cooperating therewith, means for varying the movement ofthe impression-cylinder with relation to the printing member, said meansconsisting of engaging surfaces moving with the members of theprinting-couple and one of said surfaces being inclined to its path ofmovement, and means for giving one of the surfaces a movement which isindependent of the printing movement of the couple, substantially asdescribed.

28. In a printing'press, the combination with a rotating printing orform cylinder, of an impression -cylinder, means for driving the twocylinders in unison during a part of their rotation, means rotating withthe cylinders for varying the rotation of the impression-cylinder withrelation to the form-cylinder, and means for giving said last-namedmeans a movement independent of its rotating movement, substantially asdescribed.

29. In a printing-press,the combination of a continuously-rotating plateor form cylinder, an impressioncylinder, means for rotating theimpression-cylinder intermittently so that it shall step during eachrevolution of the form-cylinder, and mechanism mounted upon and rotatingwith the plate cylinder and engaging with the impression-eylinder forgiving the impression-cylinder a graduated rotatory motion from itspositionof rest to even motion with the form-cylinder,and again fromeven motion with the form-cylinder to a position of rest, substantiallyas described.

30. In a printing-press,the combination of a continuously-rotating plateor form cylinder,

e29,os7I- 7 an impression-.cy' linder, means for rotating theimpression-cylinder intermitten tly so that it shall stop during eachrevolution of the form-cylinder, segmental gearing for connect-- ing thetwo cylinders while the printing operation isin progress, and'mechanismmounted upon androtating with the plate-cylinderand fengaging with theimpressiomcylinderv for communicatinga graduated rotatory motion to theimpression-cylinder between its position of rest and its position whengeared to the form-cylinder, substantially as'described.

31. In a printingspress,the,combination of a continuously-rotatingplateor formcylinder,

an impression-cylinder, means. for rotating the impression {cylinder intermittent'ly so that I it shall stop during each revolution of theform-cylinder, segmental gearing for connect ing the two cylinders whilethe priutin g opera 1 tion is in progress, and mecha'nismmonnted uponand-rotatin g with the plate-cylinder and engaging with theimpression-cylinder for communicating a graduated rotatory motion to theimpression-cylinder between. its position'of rest audits position whengeared to V the form-cylinder, and again between itslat-L ter positionand its position of tially as described.

rest, substan- 32. In a printing-press, the combination of" animpression-cylinder, a plate or form cylin der, means for connecting thetwo cylinders,

so that the former cylinder shall receive motion from the latter duringa portion only of each revolution of the plate-cylinder, and

mechanism mounted upon and rotating with the plate-cylinder and engagingwith the impression-cylinder for graduating the motion transmitted tothe impression-cylinder so that the same shall gradually increase from aposition of rest to equality with the form-cylin der and shall graduallydecrease from such equality to aposition of rest, substantially asdescribed. 1

33. The combination of an impression-cylinder, provided with a segmentalgear, two

. studs or rolls, a larger-cylinder provided with a driving-gear, andtwo pivoted cam-actuated cou lin -levers whereb a raduated motion b b istransmitted from the'larger cylinder to the impression-cylinderonstarting the same and bringing it to rest, substantially as described.

34. The combination of an impression-cyl-.

inder provided with afsegmental gear, two studs or rolls, aform-cylinder of larger diameter than the impression-cylinder providedwith a driving-gear for engaging with said segmental gear, and twopivotedcam-actuated' coupling-levers adapted respectively to engage withsaid studs or rolls whereby a graduated motionis transmitted from theform-cylinder to the impression-cylinder on.

starting the same and bringing it to rest, substantially as described.

35. The combination of an impression-cylinder, two studs or rollscarried thereby, a

form-cylinder of larger diameter than the impression-cylinder providedwith two pivoted cam-actuated coupling-levers adapted respectively toengage said studs or rolls, and means forcontinuouslyrotating said formcylinder,

substantially as described. I

36. The combi'nationof an impression-cylformecylinder of larger diameterthan the impression-cylinder provided with two pivoted cam-actuatedcoupling-levers adapted to successively coact with said studs orrolls,.and mcans for continuously rotatingsaidform inder, two studsorrolls carried thereby, a g

cylinder whereby the impression-cylinder is engaged while stationary andsftarted into rotation-and isengaged while running at speed and has itsrotation retarded to brin git to rest,

substantially as described.

37. IThe combin ation with two cylinders, the'fi'rst of which is driven,astud'or roll carried'by the second cylinder, mechanism mounted upon thefirst cylinder provided with a driving-face for engaging with the. studor rolland thereby giving motion to thesecond cylinder, and means forchanging the inclination of the driving-face with reference to the studor roll. whereby a graduated motion is transmitted from the firstcylinder to the.

second cylinder, substantially as described. 38. The combination withtwo cylinders, the first of which is driven, a stud or roll carried bythe second cylinder, a coupling-lever pivoted upon the first'cylinderprovided with a driving-face forengaging with the stud or roll andthereby giving motion to the second oted to the form-cylinder and eachprovided with a driving-surface adapted to engage with one of the studsor rolls and means for mov ing the coupling-levers on their pivots tochange the inclination of the driving-faces with reference to theirrespective studs or rolls whereby graduated motion is transmitted fromthe form-cylinder to the impressioncylinder on starting and stopping theimpression-cylinder, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

, rnoMAs M. NORTH.

Witnesses: i

F. W. H. CRANE, v LoUIs RoEHM,

